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Tapered Half Dovetail Joint

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Forum topic by KPW posted 02-01-2012 03:10 AM 1963 views 0 times favorited 6 replies Add to Favorites Watch
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KPW

226 posts in 1835 days


02-01-2012 03:10 AM

Topic tags/keywords: question joining

What is a tapered half dovetail joint and how is it made and used?

-- Ken --------- never try and put 5 lbs. of tenon in a 3 lb. mortise.


6 replies so far

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Loren

8313 posts in 3114 days


#1 posted 02-01-2012 03:28 AM

The joint is variant on the tapered sliding dovetail used in case
construction. The groove is undercut in a dovetail profile on
one side only. The other is straight.

The joint is simpler to fine tune since only one side is dovetailed.

The other side may be fine-tuned with hand planes; with a bench
plane if there is no shoulder and with a shoulder plane if there is a shoulder.

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KPW

226 posts in 1835 days


#2 posted 02-01-2012 04:22 PM

Thanks Loren. But I’m still not sure how to make it. I’m trying to use it to attach a top to a case piece.

-- Ken --------- never try and put 5 lbs. of tenon in a 3 lb. mortise.

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Loren

8313 posts in 3114 days


#3 posted 02-01-2012 07:58 PM

Instructions are in Gary Rogowski’s book “Router Joinery” and
probably in his big FWW book on joinery as well.

The joint works well for attaching an overhanging top to a case.

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a1Jim

115202 posts in 3043 days


#4 posted 02-01-2012 08:09 PM

Gary’s book “Joinery “is my Favorite book on joinery ,I have and autographed copy.
Here’s some on line info.

http://www.finewoodworking.com/SkillsAndTechniques/SkillsAndTechniquesArticle.aspx?id=27113

-- http://artisticwoodstudio.com Custom furniture

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Moron

5032 posts in 3360 days


#5 posted 02-01-2012 08:16 PM

Half the dovetail is used, as some one mentioned the other side is flat.

Numerous ways to make it. The sliding dove tapers from one end to the other, thinner on one side, the thicker on the opposite side/end. 2 of many ways to make one – use a router with dovetail bit, and place piece on a slope there for machining more or less material from one side to the other. Similar procedure can be done on a table saw.

Trying to fit a long dove tail. say 16” long, example, a shelf that slides into the side of cabinet/furniture, when its a tight fit and a consistent thickness, when the glue is applied, the joint can expand enough to render it impossible to slide through. By tapering the same joint gives the application enough time to be joined.

-- "Good artists borrow, great artists steal”…..Picasso

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a1Jim

115202 posts in 3043 days


#6 posted 02-01-2012 08:20 PM

sorry I forgot the half lap dovetail link.you have to scroll down the page some

http://www.craftsmanspace.com/knowledge/lap-woodworking-joints.html

-- http://artisticwoodstudio.com Custom furniture

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